At 1:55 PM -0700 4/22/09, Scott Brim wrote:
As I understand it, the ICE client is not deciding on what address to
use on its packets, it is _discovering_ what address it is using and
then communicating that to its peers as payload (not providing it as
fodder for a forwarding function).
I think if you go back and review the "Gathering Candidates"
section of http://tools.ietf.org/html/draft-ietf-mmusic-ice-19,
you'll see that the Host Candidate portion covers this area:
The first step is to gather host candidates. Host candidates are
obtained by binding to ports (typically ephemeral) on a IP address
attached to an interface (physical or virtual, including VPN
interfaces) on the host.
Those candidates become part of the overall candidate list (and
it gets much, much more complicated than this small snippet would
indicate), and the SDP exchange is then a signalling-path mechanism
for working out the best flow pairing.
regards,
Ted
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